Conduit-joint.



G. B. VON BODEN.

GONDUIT JOINT. APPLICATION FILED M127, 1912.

1,042,852. Patented 0ct.29,1912.

A mul llllllllllllllh GEORGE B'. von ABonner, or snN FnANoIsco, Chr.rrolirrm..

Connors-JOINT.

-r- Specification otlLetters Patent,

'- Application led April 27', 1912; Serial No. 693,758.

To all whom t may c0'he1m1'-f.

Be it known'that I, Gr' non-B. VON Bo- DEN, a citizen of the UnitedStates, residing in the city and county-'ofSan Francisco and a State of California, have invented new and Itsoou ling oints.

useful Improvements'in .Conduit-Joints, of which the following is a specification.

My invention relates tojoints for conduits, and is especially designed for se for the conduction of oil and steam, as forv locomotive Work, or for air and like couplings.

,It consists in the employment of members and means for automatically mak ing` tight joints to prevent leakage 'at the Tie invention consists of the parts and the combination and construction of parts as .hereinafter more fully described and claimed, having reference to the accompanying drawings, in which- Figure l illustrates the use of my couplings for conducting fuel oil between the locomotive and its tank or tender. r a sectional view of a double joint. Fig. 3 is a view of a single joint.

For the purpose of conducting fuel oil or steam, or air under pressure asused upon locomotives, and under like conditions, it is desirable to have the pipes readily separable where a train or parts are to 'be broken up, and to provide an absolutely tight 'joint to prevent leakage when in use'.

l' have illustrated the invention inA the.

present case as comprising 'a coupling `between a locomotive where fuel o1l 1s used,

and the tankor tender in which the supply is contained.

A-A are the pipes connecting respectively with the tender and with the burner of the locomotive, and 2 representsthejoints. These are connected in this -instance by pipes 3, with a flexible joint at 4 allowing' for variations in distance between the engine and tender, and for irregularities of movement. The coupling members 2 may be either direct or have the ends formed atright angles witheach other, in which case the part 2 represents a quadrant of a circle, and the ends 5 have the'interior connecting with the'interior of the part 2, made tapering, as shown at 6. At the inner end of the tapering portion and between this and the connectmn with the part 2 is made an'anmrlar chamber or enlargement 7 for a purpose to be hereinafter described. l The other mem-` ber of this coupling may be represented by Fig. 2 is i the pipe A, or some intermediate between it 5and the part 2. The inner end of this pipe has an enlarged tapered head 8 correspondlng and fitting the interior 6 of the membe'L 2 w1th a ground joint. The inner end of this tapered portion when the joint is fitted,

extends only to the outer portion of the annular chamber 7 and thus allows for the conical'member 8 to enter this chamber and maintain the lit between the two parts under jany, condition of wear or service. The taprdpart 8 has a shoulder formed upon it, .as shown at 9.

10 is a cap bored to fit over the pipe A, or its e uivalent, and having its inner end shoul ered and screw-threaded to engage corresponding screw-threads on the outside of the part 5, as shown at 11, so that this cap may serve to connect the part A with thepart 2. Interior of this cap is a spiral sprmg 12'; theouter coil of which contacts with the mter1or of the cap 10 and the op- Patented oct.29,"1912.

posite end presses against the shoulder 9 of i the part with suflicient strength to retain the parts 1n constant engagementand maintain a tight joint. As shown in Figsfl and 2, there are two of these joints which thus enable a change in direction'in order to make the flexible coupling members 3 and 4. It will be seen that .by this construction the ground tapered joint'is' always maintained 4in perfect contact; the chambers 7 allow for any-wear or service which might naturally force the part 8 into the part 6, and otherwise make a leaking joint, and the springV '12 maintains the joint. Experience lwith an oil' conductor having this joint shows that there is absolutely no leak whatever after many months of use.

Havingthus described my invention what I claim and desire to secure by Letters Patentis- 1. In a conduit coupling, the combination of a ipe having an end with an external shoul er back of the extremity thereof, said pipe having the exterior tapering from the shoulder to the extremity; a coupling member of elbow-form having an enlarged end' provided withl a tapering bore forminga' socket "for the tapering pipe-end, said coupling. member having'an annular chamber onv its inside at the base of and connecting with the socket, and disposed adjacentl the inner end of vthe tapered pipe-end; a cap screwed upon the outer end of the coupling member, said cap being bored to lit over said exterior tapering continuously' from the- Shoulder to the extremity; a coupling member of double elbowv form having each snd enlarged and'pfrovided with a tapering bore forming a socket for the corresponding end of a pipe section, said coupling member having each endr provided with an annular chamber on its inside at the base ofl andA connecting with the taperin bore, and disposed adjacent the inner end t ereof, caps screwed upon the outer ends of the coupling member, saidicaps being bored to it over the pipe sections ana to inclose the shoulders thereof; and aspring surrounding each pipe section,

. said caps being chambered-,to receive the springs, and said springs being confined be' tween said shoulders and an end wall of the n testimony whereof II have hereunto set my hand in the presence of two subscribing witnesses. c

GEORGE B. VON BODEN. Witnesses: f

WALTER REIMERS,

S. DONELIN. 

